- 1978 - 1983 Waseda University
- 1978 - 1983 Waseda University, Assistant Professor
- 1977 - 1978 Tokyo University of Agriculture
- 1977 - 1978 Tokyo University of Agriculture, Assistant Professor
- 1972 - 1977 Tokyo University of Agriculture
- 1972 - 1977 Tokyo University of Agriculture, Lecturer
- 1970 - 1972 東京都立商科短期大学講師(非常勤)
- 1970 - 1972 Tokyo Junior College of Commerce,(part-time)Instructor
- 1963 - 1970 東京都立大泉高等学校教諭
- 1963 - 1970 Tokyo Oizumi High School, Teacher
- 1960 - 1963 東京都文京区立第七中学校教諭
- 1960 - 1963 Tokyo Bunkyo Dainana Middle School, Teacher
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